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kernel: st2: Error 18 (driver bt 0x0, host bt 0x0)

Hello,

i didn't find any solution on forums

i would like to open top by sharing of tape drives between 2 media servers

i understand that reservation conflict is normal behaviour, few times per day or one daily we have error 18 or Control daemon connect or protocol error

on SAN switch is set failover for tape drives

media servers are RedHat with newest kernel and nbu is 7.5.0.7

the tape drives are never down and are working properly

have anybody suggestion?

 

Mar  6 05:00:05 gcs-amsdc1-nbmed02 kernel: st 1:0:1:0: reservation conflict
Mar  6 05:00:05 gcs-amsdc1-nbmed02 kernel: st 1:0:2:0: reservation conflict
Mar  6 05:00:05 gcs-amsdc1-nbmed02 kernel: st2: Error 18 (driver bt 0x0, host bt 0x0).
Mar  6 05:00:05 gcs-amsdc1-nbmed02 kernel: st 1:0:3:0: reservation conflict
Mar  6 05:00:05 gcs-amsdc1-nbmed02 kernel: st 1:0:3:0: reservation conflict

 

# more messages | grep "Error 18"
Mar  2 05:00:04 gcs-amsdc1-nbmed02 kernel: st3: Error 18 (driver bt 0x0, host bt 0x0).
Mar  4 05:00:05 gcs-amsdc1-nbmed02 kernel: st0: Error 18 (driver bt 0x0, host bt 0x0).
Mar  4 05:00:05 gcs-amsdc1-nbmed02 kernel: st2: Error 18 (driver bt 0x0, host bt 0x0).
Mar  5 05:00:05 gcs-amsdc1-nbmed02 kernel: st0: Error 18 (driver bt 0x0, host bt 0x0).
Mar  5 05:00:05 gcs-amsdc1-nbmed02 kernel: st1: Error 18 (driver bt 0x0, host bt 0x0).
Mar  6 05:00:05 gcs-amsdc1-nbmed02 kernel: st2: Error 18 (driver bt 0x0, host bt 0x0).

 

]# more messages | grep DOWN
Mar  2 13:56:33 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error
Mar  2 13:56:34 gcs-amsdc1-nbmed02 ltid[14446]: Request for media ID D177L5 is being rejected because mount requests are disabled (reason = robotic daemon going to DOWN state)
Mar  2 13:56:34 gcs-amsdc1-nbmed02 ltid[14446]: Request for media ID D146L5 is being rejected because mount requests are disabled (reason = robotic daemon going to DOWN state)
Mar  2 13:56:34 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error
Mar  2 14:00:11 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error
Mar  2 14:00:17 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error

 

more messages | grep error
Mar  2 13:56:33 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error
Mar  2 13:56:34 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error
Mar  2 14:00:11 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error
Mar  2 14:00:17 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) going to DOWN state, status: Control daemon connect or protocol error
Mar  2 14:02:11 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) unavailable: initialization failed: Control daemon connect or protocol error
Mar  2 14:07:42 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) unavailable: initialization failed: Control daemon connect or protocol error
Mar  2 14:13:13 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) unavailable: initialization failed: Control daemon connect or protocol error
Mar  2 14:18:44 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) unavailable: initialization failed: Control daemon connect or protocol error
Mar  2 14:24:16 gcs-amsdc1-nbmed02 tldd[14472]: TLD(1) unavailable: initialization failed: Control daemon connect or protocol error

 

 

 

1 Solution

Accepted Solutions
Accepted Solution!

multipath to robotic path is

multipath to robotic path is ok

i re-added SSO license and rebooted media servers - because it was added and configured shared tape drives without reboot of media servers

now we dont see any problems

#cat messages

Mar 16 08:39:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316083920_67551
Mar 16 08:44:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316084420_71661
Mar 16 08:45:10 gcs-amsd2a-nbmed01_bck ntpd[7130]: synchronized to 160.118.49.21, stratum 2
Mar 16 08:49:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316084920_73583
Mar 16 08:54:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316085420_76897
Mar 16 08:59:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316085920_78722
Mar 16 09:04:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316090420_718
Mar 16 09:09:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316090920_2723
Mar 16 09:14:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316091420_6428
Mar 16 09:19:20 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316091920_8225
Mar 16 09:24:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316092419_11965
Mar 16 09:29:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316092919_13865
Mar 16 09:34:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316093419_17138
Mar 16 09:39:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316093919_19030
Mar 16 09:44:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316094419_22272
Mar 16 09:49:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316094919_24121
Mar 16 09:54:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316095419_27967
Mar 16 09:59:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316095919_29704
Mar 16 10:04:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316100419_33266
Mar 16 10:09:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316100919_35505
Mar 16 10:14:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316101419_38938
Mar 16 10:14:44 gcs-amsd2a-nbmed01_bck ntpd[7130]: synchronized to 160.118.49.23, stratum 2
Mar 16 10:19:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316101919_40655
Mar 16 10:24:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316102419_43852
Mar 16 10:29:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316102919_45569
Mar 16 10:34:19 gcs-amsd2a-nbmed01_bck SEC_TEST: gcs-amsdc1-nbmed01 150316103419_49139

 

View solution in original post

23 Replies

Are both media servers in the

1) Are both media servers in the same NetBackup domain? 2) Is a NetBackup SSO license installed? 3) Does scan -tape show the same tape drive serial numbers on both media servers? 4) Is the HBA the same model in both media servers? 5) Is the firmware of the HBA at the same revision in both media servers? 6) Is the same robotic control LUN presented to more than one master, master/media, or media server? 7) Is the tape library partitioned?

Something very wrong with

Something very wrong with your config. If SSO is setup properly you shouldn't see reservation conflicts. 1st thing to check is that persistent binding at hba level is done on all media servers. This will prevent device name change when server is rebooted. 2nd is to confirm that SSO license is added to all media servers along with drive and server licenses. If all of the above is in place, delete all tape drives currently configured on all media servers and start again. Use the Device config wizard to select all media servers and config devices simultaneously. The master server will coordinate device allocation and prevent reservation conflicts.

hello, sorry for late answer

hello,

sorry for late answer ....

1) Are both media servers in the same NetBackup domain? we don't use domain
2) Is a NetBackup SSO license installed? yes

[root@gcs-amsdc1-nbmed01 ~]# bpminlicense -list_keys -verbose
  file version    = 0x05000000
  time added      = 0x54c75fc9 Tue 27 Jan 2015 10:52:09 AM CET
  Feature ID      = 79 Flexible Disk Option +
  Feature ID      = 78 OpenStorage Disk Option +
  Feature ID      = 76 Virtual Tape Option +
  Feature ID      = 30 Shared Storage Option +
  Feature ID      = 27 NDMP +

[root@gcs-amsdc1-nbmed02 ~]# bpminlicense -list_keys -verbose
  file version    = 0x05000000
  time added      = 0x54c1fcea Fri 23 Jan 2015 08:48:58 AM CET
  Feature ID      = 79 Flexible Disk Option +
  Feature ID      = 78 OpenStorage Disk Option +
  Feature ID      = 76 Virtual Tape Option +
  Feature ID      = 30 Shared Storage Option +
  Feature ID      = 27 NDMP +

 

3) Does scan -tape show the same tape drive serial numbers on both media servers? yes
4) Is the HBA the same model in both media servers? yes
5) Is the firmware of the HBA at the same revision in both media servers? no

[root@gcs-amsdc1-nbmed02 scsi]# systool -c scsi_host -v -d host1 | grep fw_version
    84xx_fw_version     = ""
    fw_version          = "7.03.00 (90d5)"
    optrom_fw_version   = "5.04.01 128"
    optrom_gold_fw_version= ""

[root@gcs-amsdc1-nbmed01 ~]# systool -c scsi_host -v -d host1 | grep fw_version
    84xx_fw_version     = ""
    fw_version          = "5.08.00 (90d5)"
    optrom_fw_version   = "5.04.01 128"
    optrom_gold_fw_version= ""

6) Is the same robotic control LUN presented to more than one master, master/media, or media server?

robotic control is on nbmed01 only
7) Is the tape library partitioned? no

 

 

hello Marrianne, as they are

hello Marrianne,

as they are RedHat and they is default persistnat binding

SSO is on place

 

i added them via wizard

i will try to reboot the servers and add them again ...

1) Are both media servers in

1) Are both media servers in the same NetBackup domain? yes
2) Is a NetBackup SSO license installed? yes

[root@gcs-amsdc1-nbmed02 log]# bpminlicense -list_keys -verbose
  Feature ID      = 79 Flexible Disk Option +
  Feature ID      = 78 OpenStorage Disk Option +
  Feature ID      = 76 Virtual Tape Option +
  Feature ID      = 30 Shared Storage Option +
  Feature ID      = 27 NDMP +

[root@gcs-amsdc1-nbmed01 ~]# bpminlicense -list_keys -verbose
  Feature ID      = 79 Flexible Disk Option +
  Feature ID      = 78 OpenStorage Disk Option +
  Feature ID      = 76 Virtual Tape Option +
  Feature ID      = 30 Shared Storage Option +
  Feature ID      = 27 NDMP +

 

3) Does scan -tape show the same tape drive serial numbers on both media servers? yes
4) Is the HBA the same model in both media servers? yes
5) Is the firmware of the HBA at the same revision in both media servers?


[root@gcs-amsdc1-nbmed01 ~]# systool -c scsi_host -v -d host1 | grep fw_version
    84xx_fw_version     = ""
    fw_version          = "5.08.00 (90d5)"
    optrom_fw_version   = "5.04.01 128"
    optrom_gold_fw_version= ""

[root@gcs-amsdc1-nbmed02 log]# systool -c scsi_host -v -d host1 | grep fw_version
    84xx_fw_version     = ""
    fw_version          = "7.03.00 (90d5)"
    optrom_fw_version   = "5.04.01 128"
    optrom_gold_fw_version= ""

6) Is the same robotic control LUN presented to more than one master, master/media, or media server?only nb-med01 is robotic control
7) Is the tape library partitioned? no

I don't see NBU server

I don't see NBU server license or Library based tape drive licenses in your output.

When you see these reservation conflicts, check NBU 'nbrbutil -dump' output as well vmdareq output on the master.

Device allocation from the master server (EMM) in SSO environment is explained in NBU Admin Guide II:  http://www.symantec.com/docs/DOC5158 
Chapter 3: About Shared Storage Option configuration

Looking at the licensing

Looking at the licensing guide, it looks you are mising the "NetBackup Library Based Tape Drive" license, of which you would require one per tape drive in tape libraries.

Having same model HBA but different firmware revisions is probably not a great situation to be in - but maybe you are restricted by O/S version differences, which restricts HBA driver versions, which restricts HBA firmware versions.

New questions:

8) What are the HBA driver versions?

9) What are the RHEL versions?

no both media server

no both media server have:

[root@gcs-amsdc1-nbmed01 ~]# bpminlicense -list_keys -verbose | grep Feature
  Feature ID      = 79 Flexible Disk Option +
  Feature ID      = 78 OpenStorage Disk Option +
  Feature ID      = 76 Virtual Tape Option +
  Feature ID      = 30 Shared Storage Option +
  Feature ID      = 27 NDMP +
  Feature ID      = 40 SAP extension +
  Feature ID      = 49 Library Based Tape Drives +
  Feature ID      = 40 SAP extension +
  Feature ID      = 84 SAN Client +
  Feature ID      = 81 Enterprise Vault Agent +
  Feature ID      = 75 Bare Metal Restore +
  Feature ID      = 74 Encryption +
  Feature ID      = 73 Open File Backup +
  Feature ID      = 70 Robotic Library Sharing Support +
  Feature ID      = 69 Remote Media Server Support +
  Feature ID      = 68 Microsoft RSM Robotic Libraries +
  Feature ID      = 67 ADIC DAS/SDLC Robotic Libraries +
  Feature ID      = 66 IBM ATL Robotic Libraries +
  Feature ID      = 65 Fujitsu LMF Robotic Libraries +
  Feature ID      = 64 StorageTek ACS Robotic Libraries +
  Feature ID      = 62 Snapshot Client +
  Feature ID      = 58 Inline Tape Copy +
  Feature ID      = 49 Library Based Tape Drives +
  Feature ID      = 46 DataStore +
  Feature ID      = 43 Encryption (Legacy DES 56-bit) +
  Feature ID      = 42 Encryption (Legacy DES 40-bit) +
  Feature ID      = 22 Additional clients +
  Feature ID      = 20 Base NetBackup +
  Feature ID      = 83 PureDisk MS Exchange Agent +
  Feature ID      = 81 Enterprise Vault Agent +
  Feature ID      = 80 PureDisk MS SQL Server Agent +
  Feature ID      = 61 MS SharePoint Agent +
  Feature ID      = 38 Sybase extension +
  Feature ID      = 37 Informix extension +
  Feature ID      = 36 Oracle extension +
  Feature ID      = 35 Lotus Notes extension +
  Feature ID      = 34 DB2 extension +
  Feature ID      = 33 MS SQL Server extension +
  Feature ID      = 32 MS Exchange extension +
  Feature ID      = 22 Additional clients +
  Feature ID      = 81 Enterprise Vault Agent +
  Feature ID      = 75 Bare Metal Restore +
  Feature ID      = 74 Encryption +
  Feature ID      = 73 Open File Backup +
  Feature ID      = 43 Encryption (Legacy DES 56-bit) +
  Feature ID      = 42 Encryption (Legacy DES 40-bit) +
  Feature ID      = 22 Additional clients +
  Feature ID      = 49 Library Based Tape Drives +
  Feature ID      = 81 Enterprise Vault Agent +
  Feature ID      = 73 Open File Backup +
  Feature ID      = 71 Remote Client Support +
  Feature ID      = 70 Robotic Library Sharing Support +
  Feature ID      = 69 Remote Media Server Support +
  Feature ID      = 68 Microsoft RSM Robotic Libraries +
  Feature ID      = 67 ADIC DAS/SDLC Robotic Libraries +
  Feature ID      = 66 IBM ATL Robotic Libraries +
  Feature ID      = 65 Fujitsu LMF Robotic Libraries +
  Feature ID      = 64 StorageTek ACS Robotic Libraries +
  Feature ID      = 58 Inline Tape Copy +
  Feature ID      = 46 DataStore +
  Feature ID      = 20 Base NetBackup +
  Feature ID      = 81 Enterprise Vault Agent +
  Feature ID      = 73 Open File Backup +
  Feature ID      = 71 Remote Client Support +
  Feature ID      = 70 Robotic Library Sharing Support +
  Feature ID      = 69 Remote Media Server Support +
  Feature ID      = 68 Microsoft RSM Robotic Libraries +
  Feature ID      = 67 ADIC DAS/SDLC Robotic Libraries +
  Feature ID      = 66 IBM ATL Robotic Libraries +
  Feature ID      = 65 Fujitsu LMF Robotic Libraries +
  Feature ID      = 64 StorageTek ACS Robotic Libraries +
  Feature ID      = 58 Inline Tape Copy +
  Feature ID      = 46 DataStore +
  Feature ID      = 20 Base NetBackup +

yes, they are different

8)

[root@gcs-amsdc1-nbmed01 log]# modinfo qla2xxx | grep version
version:        8.04.00.08.06.4-k
srcversion:     C5EBE96340369EB294E6D44
vermagic:       2.6.32-358.23.2.el6.x86_64 SMP mod_unload modversions

[root@gcs-amsdc1-nbmed02 log]# modinfo qla2xxx | grep version
version:        8.07.00.08.06.6-k1
srcversion:     AA37817E1A00B7A20C0CF69
vermagic:       2.6.32-504.el6.x86_64 SMP mod_unload modversions

9)

#uname -a
Linux gcs-amsdc1-nbmed02 2.6.32-504.el6.x86_64 #1 SMP Tue Sep 16 01:56:35 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux

# uname -a
Linux gcs-amsdc1-nbmed01 2.6.32-358.23.2.el6.x86_64 #1 SMP Sat Sep 14 05:32:37 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux

 

 

ok - thanks for the detail -

ok - thanks for the detail - it all really does help set the facts.

This interests me, where you said:

"on SAN switch is set failover for tape drives"

10) Can you explain some more around this feature/config/capability?

11) And, can you post output from:

/usr/openv/netbackup/volmgr/bin/scan -changer

/usr/openv/netbackup/volmgr/bin/scan -tape

...from both servers?

12) And you previously also said:

"the tape drives are never down and are working properly"

...so there is no functional/availability/efficiency/performance problem?  And this question/post/task is more about finding out and understanding why you get those messages?

13) And can you confirm that these are seen in /var/log/messages?  Or elsewhere, if so, where were they seen?

10) sorry, it's not failover,

10)

sorry, it's not failover, but autonegotiation set on SAN switch - as it's default setting for shared tape drives

11)

[root@gcs-amsdc1-nbmed01 log]# scan -tape
************************************************************
*********************** SDT_TAPE    ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/nst7"
Passthru Name: "/dev/sg75"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA14C"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA14C"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst6"
Passthru Name: "/dev/sg74"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA0CE"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA0CE"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst5"
Passthru Name: "/dev/sg73"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB651"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB651"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst4"
Passthru Name: "/dev/sg72"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA152"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA152"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst3"
Passthru Name: "/dev/sg69"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3312"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3312"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst2"
Passthru Name: "/dev/sg68"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB674"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB674"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst1"
Passthru Name: "/dev/sg67"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3365"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3365"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst0"
Passthru Name: "/dev/sg66"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     D8D4"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "D8D4"
Serial Number: "00078A3398"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3398"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed01 log]# scan -changer
************************************************************
*********************** SDT_CHANGER ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/sg76"
Passthru Name: "/dev/sg76"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/sg70"
Passthru Name: "/dev/sg70"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed01 log]#

[root@gcs-amsdc1-nbmed02 ~]# scan -changer
************************************************************
*********************** SDT_CHANGER ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/sg43"
Passthru Name: "/dev/sg43"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/sg3"
Passthru Name: "/dev/sg3"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed02 ~]# scan -tape
************************************************************
*********************** SDT_TAPE    ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/nst7"
Passthru Name: "/dev/sg42"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA14C"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA14C"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst6"
Passthru Name: "/dev/sg41"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA0CE"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA0CE"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst5"
Passthru Name: "/dev/sg40"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA152"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA152"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst4"
Passthru Name: "/dev/sg39"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB651"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB651"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst3"
Passthru Name: "/dev/sg6"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     D8D4"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "D8D4"
Serial Number: "00078A3398"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3398"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst2"
Passthru Name: "/dev/sg5"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3365"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3365"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst1"
Passthru Name: "/dev/sg4"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB674"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB674"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst0"
Passthru Name: "/dev/sg2"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3312"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3312"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed02 ~]#

 

12) yes, tape drives are up and working properly

only one per week i see Error 52 - timed out waiting for media manager to mount volume

13) yes, they are seen in /var/log/massages and i didn't see them somewhere else

10) sorry, it's not failover,

10)

sorry, it's not failover, but autonegotiation set on SAN switch - as it's default setting for shared tape drives

11)

[root@gcs-amsdc1-nbmed01 log]# scan -tape
************************************************************
*********************** SDT_TAPE    ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/nst7"
Passthru Name: "/dev/sg75"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA14C"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA14C"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst6"
Passthru Name: "/dev/sg74"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA0CE"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA0CE"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst5"
Passthru Name: "/dev/sg73"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB651"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB651"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst4"
Passthru Name: "/dev/sg72"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA152"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA152"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst3"
Passthru Name: "/dev/sg69"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3312"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3312"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst2"
Passthru Name: "/dev/sg68"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB674"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB674"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst1"
Passthru Name: "/dev/sg67"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3365"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3365"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst0"
Passthru Name: "/dev/sg66"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     D8D4"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "D8D4"
Serial Number: "00078A3398"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3398"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed01 log]# scan -changer
************************************************************
*********************** SDT_CHANGER ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/sg76"
Passthru Name: "/dev/sg76"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/sg70"
Passthru Name: "/dev/sg70"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed01 log]#

[root@gcs-amsdc1-nbmed02 ~]# scan -changer
************************************************************
*********************** SDT_CHANGER ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/sg43"
Passthru Name: "/dev/sg43"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/sg3"
Passthru Name: "/dev/sg3"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     03584L32        B170"
Vendor ID  : "IBM     "
Product ID : "03584L32        "
Product Rev: "B170"
Serial Number: "0000078259860401"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     03584L32        0000078259860401"
Device Type    : SDT_CHANGER
NetBackup Robot Type: 8
Removable      : Yes
Device Supports: SCSI-6
Number of Drives : 8
Number of Slots  : 713
Number of Media Access Ports: 16
Drive 1 Serial Number      : "00078A3312"
Drive 2 Serial Number      : "00078A3398"
Drive 3 Serial Number      : "00078A3365"
Drive 4 Serial Number      : "00078AA14C"
Drive 5 Serial Number      : "00078AA0CE"
Drive 6 Serial Number      : "00078AA152"
Drive 7 Serial Number      : "00078AB674"
Drive 8 Serial Number      : "00078AB651"
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed02 ~]# scan -tape
************************************************************
*********************** SDT_TAPE    ************************
************************************************************
------------------------------------------------------------
Device Name  : "/dev/nst7"
Passthru Name: "/dev/sg42"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA14C"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA14C"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst6"
Passthru Name: "/dev/sg41"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA0CE"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA0CE"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst5"
Passthru Name: "/dev/sg40"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078AA152"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AA152"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst4"
Passthru Name: "/dev/sg39"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB651"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB651"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst3"
Passthru Name: "/dev/sg6"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     D8D4"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "D8D4"
Serial Number: "00078A3398"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3398"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst2"
Passthru Name: "/dev/sg5"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3365"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3365"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst1"
Passthru Name: "/dev/sg4"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     BBNE"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "BBNE"
Serial Number: "00078AB674"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078AB674"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
------------------------------------------------------------
Device Name  : "/dev/nst0"
Passthru Name: "/dev/sg2"
Volume Header: ""
Port: -1; Bus: -1; Target: -1; LUN: -1
Inquiry    : "IBM     ULT3580-TD5     B6W8"
Vendor ID  : "IBM     "
Product ID : "ULT3580-TD5     "
Product Rev: "B6W8"
Serial Number: "00078A3312"
WWN          : ""
WWN Id Type  : 0
Device Identifier: "IBM     ULT3580-TD5     00078A3312"
Device Type    : SDT_TAPE
NetBackup Drive Type: 10
Removable      : Yes
Device Supports: SCSI-6
Flags : 0x0
Reason: 0x0
[root@gcs-amsdc1-nbmed02 ~]#

 

12) yes, tape drives are up and working properly

only one per week i see Error 52 - timed out waiting for media manager to mount volume

13) yes, they are seen in /var/log/massages and i didn't see them somewhere else

Ok - tape drive serialization

Ok - tape drive serialization looks good.

I'm sorry to say this after all this investigation, but if they all seem to be working ok - then I guess what we need is for some other users/customers to confirm whether they also see the same messages - and whether they simply ignore them, as in... that's just the way it is.  However, I can see where you are coming from in trying to ensure that there isn't something nasty behind such messages.

And, I'm sorry, and you'll have to excuse my ignorance on this... but I still don't understand this:

"but autonegotiation set on SAN switch - as it's default setting for shared tape drives"

14) Are you refering to FC speed autonegotiation?  If so, IMO, I thought best practice was to hard set the speed of SAN ports for tape, and not to leave it to negotiate.

15) If you are referring to something else, can you supply a link/URL to something that describes it in more detail?

On an RHEL 6.4 NetBackup v7.6.0.1 system that I have access to, the HP branded FC attached LTO6 tapes that my scan shows up are listed as 'NetBackup Drive Type: 16' - so I'm wondering whether IBM LTO5 tape drives (or even all LTO5 tape drives) show up as 'NetBackup Drive Type: 10'.   I don't think this is an issue.

16) You say you are on NetBackup v7.5.0.7 - can you take a look at this:

http://www.symantec.com/business/support/index?page=content&id=TECH55064

...and confirm which version of mappings you currently have installed?

Thanks.

Just noticed that the

Just noticed that the "changer" is listed twice by each node.

I didn't think that NetBackup "natively" supported multi-path to either robot-control or to tape drives.  But please do correct me.

I've heard that it can be done, out of sight of NetBackup, i.e. using tape library vendor features - but I didn't think that NetBackup understands multi-pathing.  I've personally used a FC module on three cab ADIC Scalar i6000 to hide the multi-pathing from NetBackup so that, via software based configuration within the tape library, it was possible to switch either or both of robot-control and/or tape drive target LUNs to different initiators from fabric A to fabric B or vice-versa, but NetBackup itself never saw the multiple paths.

Anyone else have any experience of multi-pathing robot control which is visible to NetBackup ?

we've been using multipathing

we've been using multipathing in linux and tape libraries for quite some time, no problems.

NetBackup recognizes all paths to tape drives, and only one path at a time to robotics (user selectable).

@Will - cool.  Tape library

@Will - cool.  Tape library model?  I'd like to read up on it.  Do you think that your implementation is significantly different to Marcelko's?  Any suggestions?  And, more importantly for Macelko, do you see any similar kind of messages in your system messages logs?

You say 'user selectable' for robotic path... where does that 'selection' take place?

Thanks.

We have various Quantum

We have various Quantum libraries, mainly i500.  Ocassionally see 'reservation conflict' but never the Status 18.

The selection can be seen under Media & Device Management > Devices > Robots > Change > Browse

And, finally, found this old

And, finally, found this old post with Status 18

http://www.backupcentral.com/phpBB2/two-way-mirrors-of-external-mailing-lists-3/symantec-netbackup-18/linux-media-server-tape-drive-issues-58985/

I gave in and called support. We shutdown NetBackup and
the servers. Went and shut down our ADIC. Brought it back up, restarted
servers and NBU. All back. While the Windows box didn't have any issues
with the ADIC with regard to the tape drives, the Linux box evidently had
some reservations that didn't get removed with the ADIC on the power down
when power failed. I still don't know if the ADIC lost power, but I'm
guessing it didn't, resulting in the problems.

( removed as info may not

( removed as info may not have been applicable )

Thanks Will. This leads me to

Thanks Will.

This leads me to want to check for. and release any leftover SCSI reservations...

....so maybe something along the lines of:

1)    Wait for a time when NetBackup is quiet.

2)    Check that no backup jobs are running:
$ bpdbjobs -summary

3)    Check all brokered resources have been released:
$ nbrbutil -dump

4)    Scan for all required tape drives:                (N.B. This may take several minutes)
$ scan -tape | grep -i "Device Name" | sort | wc -l

5)    Scan for all required robot changers:                (N.B. This may take several minutes)
$ scan –changer | grep –i "Device Name" | sort | wc -l

6)    Check that all NetBackup servers are “AVAILABLE”:        (N.B. This may take several minutes)
$ vmdareq -hostinfo

7)    Check that all SSO tape drives are “AVAILABLE”:
$ vmdareq -driveinfo

8)    Check all SSO tape drives have been freed, i.e. no mounted media:
$ vmoprcmd -d ds

9)    Check that no tape drives (VTL + SSO) are “active”, i.e. all are TLD and not ACTIVE:
$ vmoprcmd -devmon | egrep "/dev|{" | sort | egrep -v " TLD| SCAN-TLD"

10)    Check that all drive paths are visible across NetBackup:
$ vmoprcmd -devmon | egrep "/dev|{" | sort | wc –l

11)    Confirm that the device manager database matches the visible devices:
$ tpautoconf -report_disc

12)    Check that no backup jobs are running:
$ bpdbjobs -summary

13)    Check all brokered resources have been released:
$ nbrbutil -dump

14)    For every drive, issue a SCSI release:
$ vmoprcmd –crawlreleasebyname DRIVE-NAME                (to release SCSI reservations)

N.B. This last command will reveal any left over SCSI reservations because it will release them.  It is very important to not run a 'release' whilst NetBackup is actively using tape drives.  Try something like the above commands above on both media servers.